| Stationary Source Name | SSID | Inventory Year | ATEIP Approval Letter | ATEIR Approval Letter | HRA Results | Public Notification | Approved RRAP | Facility Webpage |
| ExxonMobil – SYU Project | 01482 | 2013 | 8/26/2019 ExxonMobil SYU 2013 ATEIP Letter | 11/12/2019 ExxonMobil SYU 2013 ATEIR Letter | Cancer risk: 9.7/million Chronic HI: <0.1 8-hour HI: <0.1 Acute HI: 0.7 | N/A | N/A | N/A |
| Orcutt Hill and Casmalia Oil Fields | 02667 | 2024 | 6/25/2026 Orcutt Hill and Casmalia Oil Fields 2024 ATEIP Letter | 6/25/2026 Orcutt Hill and Casmalia Oil Fields 2024 ATEIR Letter | Under Review by OEHHA | | | |
| Santa Maria Regional Landfill | 08713 | 2022 | Under Review | | | | | |
| Lompoc Sanitary Landfill | 08772 | 2018 | 8/16/2022 Lompoc Landfill 2018 ATEIP Letter (opens in a new tab) | 2/27/2024 Lompoc Landfill ATEIR Letter (opens in a new tab) | | | | |
| Lockheed Martin – SB Focalplane (opens in a new tab) | 09313 | 2018 | 1/31/2022 Lockheed Martin 2018 ATEIP Letter (opens in a new tab) | 1/31/2022 Lockheed ATEIR Letter (opens in a new tab) | Cancer risk: 0.8/million
Chronic HI: < 0.1
8-hour HI: <0.1
Acute HI: 1.2 | Online Notification Only October 2025 – No residences or businesses within risk footprint | 6/17/2025 Conditional Approval of RRAP (opens in a new tab)
and
March 2025 LMC RRAP (opens in a new tab) | Lockheed Martin Santa Barbara Focalplane in AB 2588 |
| E & B – South Cuyama | 01073 | 2018 | 9/29/2022 E & B 2018 ATEIP Letter | | | | | |
| Vandenberg Space Force Base | 01195 | 2018 | 2/3/2022 VSFB 2018 ATEIP Letter | 3/29/2022 VSFB ATEIR Letter (opens in a new tab) | Under Review by OEHHA | | | |
| UCSB | 02795 | 2018 | 3/1/2021 UCSB 2018 ATEIP Letter (opens in a new tab) | 5/3/2023 UCSB ATEIR Letter (opens in a new tab) | Under Review by OEHHA | | | |
| NuSil Technology | 04621 | 2023 | 6/24/2025 NuSil 2023 ATEIP/R Letter | 6/24/2025 NuSil 2023 ATEIP/R Letter | Under Review by OEHHA | | | |
